Region extraction using color feature and active net model in color image

In this paper, we propose a method to detect a road sign from a road scene image in the daytime. In order to utilize color feature of sign efficiently , color distribution of sign is examined, and then color similarity map is constructed. Additionally, color similarity shown on the map is incorporate d into image energy of an active net model. A road sign is extracted as if it is wrapped up in an active net. Some experimental results obtained by ap plying an active net to images are presented.